文档介绍：摘要
摘要
移动计算和无线通信的飞速发展为无线网络的应用开拓了美好前景,作为一种没有固定基础设施的无线网络,Ad Hoc网络在战场、紧急救援等场合具有得天独厚的优势。自上个世纪九十年代以来,Ad Hoc就一直成为无线通信、移动通信和网络安全学术界研究的热点之一。由于Ad Hoe网络自身特有的无固定基础设施和网络拓扑动态变化特性,为了使其能够得到顺利实施,需要对其各个方面开展深入研究,其中为Ad Hoc网络提供安全服务就是研究内容之一。
本文对Ad Hoe网络安全中的组密钥协商协议和证书撤销机制进行了深入的研究,并提出了自己的一些看法。关于组密钥协商协议,本文首先对目前国内外的研究现状进行了广泛而系统的研究,接着在前人工作的基础上提出了一种能快速在Ad Hoc网络中建立组密钥的FGKA协议;考虑到广播的使用及组织者的负载问题,本文利用密钥生成树思想对其扩展,提出能适应任意拓扑结构的 AT-FGKA协议,然后对上述协议进行了性能分析和比较;最后,为了提供基于身份的认证服务,本文在分析ID-MAK协议安全缺陷的前提下,提出了改进的方案
——IDEMAK协议,该协议是一种基于多线性表的认证组密钥协商协议。关于证书撤销机制,本文提出了一种适合于Ad Hoc网络的分布式证书撤销算法,该算法通过引入奖励性因素完善了信用值的影响作用,并通过引入证书状态表和指控记录表,有效降低了证书撤销过程中的通信负载。
关键词:Ad Hoe密钥管理密钥协商证书管理证书撤销
Abstracl
Abstract
As an infrastructureless work,the diverse application of Ad work in many different scenarios such as battlefield and disaster recovery has made it being researched by many different institute and infrastmctureless and the dynamic nature of work demands wide and deep research in different aspects of provide security service for Ad work is one of these researches.
Our interesting research area is Ad Hoc group key agreement protocols and certificate revocation mechanism.
Group key agreement protocols in Ad work are a challenging task and have received a tremendous amount of attention from first give all overview of protocols proposed in literature,and then present FGKA protocol which has putation the use of broadcast and the Kgh burden of single coordinator,AT-FGKA protocol is presented in order to adapt to an work topology by using k-ary last,to provide identity based authtication service,ID—EMAK protocol is proposted,which is Identity-based Enhanced Multi-party Authenticated Key Agreement Protocols from Multilinear Forms, by analyzing the security defect of ID-MAK protoc01.
Certificate revocation scheme is the most smff work in certificate manage-ment. By improving the value of trust as well as using certificate state form and charge record form,A distri